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Studies on interaction of Paenibacillus polymyxa with iron ore minerals in relation to beneficiation

Deo, Namita and Natarajan, KA (1998) Studies on interaction of Paenibacillus polymyxa with iron ore minerals in relation to beneficiation. In: International Journal of Mineral Processing, 55 (01). pp. 41-60.

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Interaction between Paenibacillus polymyxa with minerals such as hematite, corundum, quartz and kaolinite brought about significant surface chemical changes on all the minerals. Quartz and kaolinite were rendered more hydrophobic, while hematite and corundum, became more hydrophilic after biotreatment. The predominance of bacterial polysaccharides on interacted hematite and corundum and of proteins on quartz and kaolinite was responsible for the above surface-chemical changes. Bio-pretreatment of the above iron ore mineral mixtures resulted in the selective separation of silica and alumina from iron oxide, through bioflotation and bioflocculation. The utility of bioprocessing in the beneficiation of iron ores is demonstrated.

Item Type: Journal Article
Publication: International Journal of Mineral Processing
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Paenibacillus polymyxa;beneficiation;iron ore;surface chemistry.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 31 Dec 2009 06:26
Last Modified: 19 Sep 2010 05:27
URI: http://eprints.iisc.ac.in/id/eprint/19322

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